/*
 * Copyright (C) 2016 The Android Open Source Project
 *
 * Licensed under the Apache License, Version 2.0 (the "License");
 * you may not use this file except in compliance with the License.
 * You may obtain a copy of the License at
 *
 *      http://www.apache.org/licenses/LICENSE-2.0
 *
 * Unless required by applicable law or agreed to in writing, software
 * distributed under the License is distributed on an "AS IS" BASIS,
 * WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
 * See the License for the specific language governing permissions and
 * limitations under the License.
 */

#include "HandlerThread.h"

namespace android
{

    HandlerThread::HandlerThread()
        : mShouldQuit(false)
    {
    }

    HandlerThread::~HandlerThread()
    {
        quit();
    }

    sp<Looper> HandlerThread::getLooper()
    {
        Mutex::Autolock autoLock(mLock);
        if (mLooper.get() == 0)
        {
            mLooperWait.wait(mLock);
        }
        return mLooper;
    }

    status_t HandlerThread::start(const char *name, int32_t priority, size_t stack)
    {
        return run(name, priority, stack);
    }

    void HandlerThread::quit()
    {
        if (!isRunning())
        {
            return;
        }
        sp<Looper> looper = getLooper();
        mLock.lock();
        mShouldQuit = true;
        mLock.unlock();
        looper->wake();
        requestExitAndWait();
    }

    bool HandlerThread::threadLoop()
    {
        mLock.lock();
        mLooper = Looper::prepare(0);
        mLooperWait.broadcast();
        mLock.unlock();
        while (true)
        {
            do
            {
                Mutex::Autolock autoLock(mLock);
                if (mShouldQuit)
                {
                    return false;
                }
            } while (false);
            mLooper->pollOnce(-1);
        }
        return false;
    }

}; // namespace android
